
Configuring Dial Services
7-26 114062 Rev. A
Parameter: Line Type
Default: ESF
Options: Unframed T1
| ESF | SF/D4
Function: Selects either ESF or SF/D4 framing format.
Instructions: Select the appropriate frame format for your T1 equipment.
MIB Object ID: 1.3.6.1.4.1.18.3.4.9.4.1.6
Parameter: Line Coding
Default: B8ZS
Options: AMI
| B8ZS
Function: Selects a line coding method. AMI line coding is bipolar: a binary 0 is
transmitted as zero volts and a binary 1 is transmitted as either a positive
or negative pulse, opposite in polarity to the previous pulse. (When
configured for AMI line coding, the MCT1 link module remains
synchronized upon receiving up to 45 consecutive 0s.)
B8ZS (bipolar with 8-zero substitution) line coding replaces a block of
eight consecutive binary 0s with an 8-bit B8ZS code containing bipolar
violations in the fourth and seventh bit positions of the substituted code.
In the receive direction, the B8ZS code is detected and replaced with eight
consecutive binary 0s.
Instructions: Specify the line coding method.
MIB Object ID: 1.3.6.1.4.1.18.3.4.9.4.1.7
Unframed T1 Use only with BERT mode to match the line
type
ESF Transmits superframes consisting of 24
individual SF/D4 frames and provides
enhanced signaling and synchronization
SF/D4 Transmits superframes consisting of 12
individual frames
Comentarios a estos manuales